Epson EPL-N1600 Reference Manual page 143

If the problem remains, replace the Imaging Cartridge. See
"Replacing the Imaging Cartridge", on page 6-30
Missing areas on printed image
Your paper may be moist or damp. Printing is sensitive to
moisture absorbed by the paper. The higher the moisture content
in the paper, the lighter the printed output. Do not store your
paper in a humid or damp environment.
You may not be using the correct type of paper for your printer.
If the surface of your paper is too rough, printed characters may
appear distorted or broken. Smooth, high-quality copier paper is
recommended for best results. See "Paper Specifications" in
Appendix A for information on choosing paper.
Completely blank pages
If, after checking the Toner status in the EPSON Status Monitor,
the Toner message indicates that the amount of toner is low, read
"Replacing the Imaging Cartridge" starting on page 6-30.
Check that the Imaging cartridge is installed as described in
"Replacing the Imaging Cartridge", on page 6-30.
The problem may be with your software program or interface
cable. Print out a status sheet by pressing the control panel button.
If blank pages continue to print, the problem may be with the
printer. Turn off the printer and contact your dealer.
The printed image is light or faint
Darken the Density setting on the Panel menu of your printer driver.
Your paper may be moist or damp. The higher the moisture
content in the paper, the lighter the printed output. Do not store
your paper in a humid or damp environment.
Troubleshooting and Maintenance
6
6-17